A fastening device is provided for securing a plurality of elongated vehicle components to a first side of a vehicle structural member. The fastening device includes a first elongated strap member configured to form a loop around a first bundle of the elongated vehicle components, and a head member configured to be positioned on a second side of the vehicle structural member opposite the first side. The head member is provided with a through hole configuration for receipt of two portions of the first elongated strap member forming the loop and configured to allow tying of the first elongated strap member from the second side of the vehicle structural member. Moreover, the fastening device includes a second elongated strap member configured to form a loop around a second bundle of the elongated vehicle components. The head member through hole configuration is configured for receipt of two portions of the second elongated strap member forming the loop. In addition, the head member is configured to allow tying of the second elongated strap member from the second side of the vehicle structural member.